import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * 一定会被加载的路由
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [
  {
    path: '/redirect',
    component: Layout,
    hidden: true,
    children: [
      {
        path: '/redirect/:path(.*)',
        component: () => import('@/views/redirect/index')
      }
    ]
  },
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },
  {
    path: '/404',
    component: () => import('@/views/error-page/404'),
    hidden: true
  },
  {
    path: '/401',
    component: () => import('@/views/error-page/401'),
    hidden: true
  },
  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [
      {
        path: 'dashboard',
        component: () => import('@/views/dashboard/index'),
        name: 'Dashboard',
        meta: { title: 'dashboard', icon: 'dashboard', affix: true }
      }
    ]
  }
]

/**
 * asyncRoutes
 * the routes that need to be dynamically loaded based on user roles
 */
export const asyncRoutes = [
  {
    path: '/book',
    name: 'Book',
    component: Layout,
    redirect: '/book/create',
    meta: {
      title: '图书管理',
      icon: 'documentation',
      roles: [
        'admin'
      ]
    },
    children: [
      {
        path: 'create',
        name: 'BookCreate',
        component: () => import('@/views/book/create'),
        meta: {
          title: '上传图书',
          icon: 'edit',
          roles: [
            'admin'
          ]
        }
      },
      {
        path: 'edit/:fileName',
        name: 'BookEdit',
        component: () => import('@/views/book/edit'),
        hidden: true,

        meta: {
          activeMenu: '/book/list', // 选中时高亮路由
          title: '编辑图书',
          icon: 'edit',
          roles: [
            'admin'
          ]
        }
      },
      {
        path: 'list',
        name: 'BookList',
        component: () => import('@/views/book/list'),
        meta: {
          title: '图书列表',
          icon: 'list',
          roles: [
            'admin'
          ]
        }
      }
    ]
  },
  // {
  //   path: '/error',
  //   component: Layout,
  //   redirect: 'noRedirect',
  //   name: 'ErrorPages',
  //   meta: {
  //     title: 'errorPages',
  //     icon: '404'
  //   },
  //   children: [
  //     {
  //       path: '401',
  //       component: () => import('@/views/error-page/401'),
  //       name: 'Page401',
  //       meta: { title: 'page401', noCache: true }
  //     },
  //     {
  //       path: '404',
  //       component: () => import('@/views/error-page/404'),
  //       name: 'Page404',
  //       meta: { title: 'page404', noCache: true }
  //     }
  //   ]
  // },
  // 404 page must be placed at the end !!!
  { path: '*', redirect: '/404', hidden: true }
]

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
